摘要
基于常州市轨道交通2号线一期工程土建施工M2-GC-TJ-04标段下穿京杭运河段,分析下穿河流双线盾构隧道管片力学特性,以指导工程实践。建立有限元二维模型,分析小半径双通道盾构隧道管片内力及变形特性,在此基础上,针对小半径盾构隧道,分析不同上部荷载及注浆压力对管片内力及变形的影响,进一步分析双线开挖对管片变形的影响。
Based on the civil construction of Section M2-GC-TJ-04 of Phase I Project of Changzhou Rail Transit Line 2,which is underneath Beijing-Hangzhou Grand Canal,the mechanical characteristics of the segments of the double-line shield tunnel crossing the Canal are analyzed to better guide engineering practice.Based on the finite element two-dimensional model,the internal force and deformation characteristics of the segments of the small radius double-line shield tunnel are analyzed.Moreover,the influence of different upper loads and grouting pressure on the internal force and deformation of the segments is analyzed in accordance with the small radius shield tunnel,and the influence of double-line excavation on the deformation of the segments is further analyzed.
作者
曹志勇
杨江涛
张德强
闫希文
CAO Zhiyong;YANG Jiangtao;ZHANG Deqiang;YAN Xiwen(The 2nd Engineering Co.,Ltd.of China Railway 12th Bureau Group,Taiyuan,Shanxi030032,China;Department of Geotechnical Engineering,College of Civil Engineering,Tongji University,Shanghai200092,China;Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,Tongji University,Shanghai200092,China)
出处
《施工技术》
CAS
2021年第12期105-108,共4页
Construction Technology
基金
国家自然科学基金面上项目:土压平衡盾构长距离下穿京杭运河施工控制原理及控制关键技术研究(考虑时效特性的岩体结构面注浆加固细观机理及宏观力学特性研究(41977227))。
关键词
隧道
盾构
管片
力学特性
荷载
注浆压力
数值模拟
tunnels
shields
segment
mechanical characteristics
load
grouting pressure
simulation
